257135949

素因数分解:

$3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{214817}}^1$

素因数の和:214849

約数の個数: 24

約数和(自身を含む): 446821440

約数和(自身を除く): 189685491

約数列:

[1, 3, 7, 9, 19, 21, 57, 63, 133, 171, 399, 1197, 214817, 644451, 1503719, 1933353, 4081523, 4511157, 12244569, 13533471, 28570661, 36733707, 85711983, 257135949]

約数ペア:

[(1, 257135949), (3, 85711983), (7, 36733707), (9, 28570661), (19, 13533471), (21, 12244569), (57, 4511157), (63, 4081523), (133, 1933353), (171, 1503719), (399, 644451), (1197, 214817)]